Safety Management

Governance

CNOOC Limited places great emphasis on production safety and strictly abides by the Law of the People's Republic of China on Work Safety, the Law of the People's Republic of China on the Protection of Oil and Gas Pipelines, the Regulations on the Safety Production of Offshore Oil, the Rules for the Administration of Offshore Oil Safety, the Safety Rules for Offshore Fixed Platforms and other relevant laws, regulations and industry standards. On the basis of good domestic and international practices and the safety management system standards issued by relevant international organizations, we have established and improved the Company's characteristic HSE management system. We have formulated the Safety Management Measures, the Emergency Management Measures, and the Potential Hazard Management Measures, and this year we revised the “Three Simultaneity13” Management Guidelines for Safety and Environmental Protection in Construction Projects. By doing so, we ensure that the system is deeply integrated with the Company's basic QHSE internal control policy and set clear principles and parameters for safety management.

CNOOC Limited has developed a hierarchical, top-down safety management structure and strictly enforces safety accountability. The management team is responsible for the organization and implementation of safety measures, supervising the implementation of safety responsibilities across all units and departments, and regularly reporting to the Board of Directors to ensure safe operations and sustainable development.

Strategy

CNOOC Limited upholds the core values of "Safety First, Environment Paramount, People-oriented and Equipment Intact," and has systematically established a comprehensive safety production strategic framework based on QHSE core management requirements. Through deepening the distinctive safety culture of "People Orientation, Execution, and Intervention," we have developed a full-process institutional system and risk management mechanism, strengthened digital intelligence empowerment and fundamental infrastructure development, and fully advanced the digital and intelligent transformation of safety production. The "Haineng-Zhi’an" platform has been launched and operationalized, achieving "single-source data collection with multi-party sharing" of QHSE data, fostering synergy in QHSE management across headquarters and affiliated entities. We continue to advance the modernization of our safety management system and governance capabilities, steadily enhance the refinement of safety management practices, and build a robust safety barrier to support the creation of a world-class benchmark enterprise.

Impact, Risk, and Opportunity Management

CNOOC Limited conducts multidimensional assessments of safety production risks, implements graded control measures and preventive actions, and establishes a full-process closed-loop accident management mechanism. By advancing the digital and intelligent transformation of QHSE, we comprehensively enhance management coordination efficiency and strengthen risk prevention and control capabilities.

Metrics and Targets

CNOOC Limited remains steadfast in its goal of "resolutely eliminating major accidents and comprehensively preventing all hazards in a bid for zero fatality." We set a safety production target for the year, aiming to keep the recordable occupational injury incidents rate per million work hours below 0.5. In 2025, there was no occurrence of major safety accidents.

Safety Capacity Building

CNOOC Limited strengthens emergency response capacity, conducts practical drills and simulations, and fosters a safety-oriented culture among all employees, systematically enhancing safety assurance capabilities in three key areas.

Emergency Capability Building

In 2025, CNOOC Limited aimed to build an emergency management system featuring unified command, coordinated full-time and part-time response, rapid reaction, and vertical linkage. We further improved the emergency safety management framework and advanced the shift toward prevention-oriented management. We established a regionally coordinated and multi-layered emergency protection network, enabling efficient integration of emergency resources and coordinated response, and strengthening safeguards for high-quality development.

Emergency Drills

In 2025, guided by the core principle of "combat-oriented training and professional quality enhancement," CNOOC Limited coordinated and organized comprehensive scenario-based emergency drills across all affiliated entities, establishing three major drill directions: "regional joint defense, government-enterprise collaboration, and specialized critical response," implementing differentiated drill strategies.

Safety Culture Cultivation

CNOOC Limited actively conducts safety training and awareness activities, strengthening safety production consciousness among all employees and achieving full coverage of safety supervision training.

Work-Related Injury Insurance Investment

In accordance with the Administrative Measures for the Extraction and Utilization of Production Safety Expenses of Enterprises, combined with actual needs, the Company extracted safety production expenses for safety risk prevention, production equipment inspection, and safety education and training, fully ensuring safe production.

The Company purchases work-related injury insurance, safety production liability insurance, and other insurance products for all employees to maintain health and safety protection during the production process. In 2025, the Company invested a total of RMB 9.6099 million in accident insurance.

Safe Operations

CNOOC Limited places great emphasis on contractor safety management, continuously maintaining the stable operation of equipment and facilities, improving well control safety management, and ensuring the smooth execution of domestic and international projects. This lays a solid foundation for safe operations.

Contractor Safety Management

CNOOC Limited has established a contractor safety management system based on the Contractor Quality, Health, Safety, and Environmental Management Measures and the Contractor QHSE Management Rules. The Company fully implements the contractor safety responsibility guarantee system to ensure that contractor safety management is effectively carried out.

Equipment and Facility Integrity Management

CNOOC Limited has carried out specialized management improvement initiatives for key offshore oil and gas equipment and facilities, continuously enhancing its equipment and facility integrity management system. We implement comprehensive reviews during the feasibility study and basic design stages of development projects, strengthen the identification and remediation of potential hazards, and conduct detailed risk assessments for critical facilities. In 2025, we implemented seven key initiatives, including system upgrades and digital empowerment, to deepen the application of advanced technical protection measures and IoT devices in equipment maintenance operations. We strived to translate platform data capabilities into practical operational effectiveness that is visible, tangible, and usable at the frontline. We successfully deployed multiple digital and intelligent safety technologies, enabling early identification, early warning, and early response to potential equipment risks. Despite the continuous increase in equipment inventory, our equipment integrity rate reached 99.96%, providing strong support for safe production and reserve and production growth.

Safety Management for Well Control

CNOOC Limited consistently adheres to a systematic approach, accurately identifies changes and maintains control, upholds the principle of "four preventions," firmly maintains the "red line for well control," continuously enhances well control safety, and makes every effort to ensure overall stability in the Company's safety production situation.

Overseas Public Safety Management

CNOOC Limited continues to improve the "5+2" overseas public safety management system, striving to enhance overseas public safety management culture, institutional mechanisms, system standards, fundamental research, and information technology development, systematically improving overseas public safety management capabilities, preventing and controlling major public safety risks, strengthening public safety supervision and inspection of overseas projects, and making every effort to ensure the safety of overseas personnel and projects.

The Company established a three-dimensional risk monitoring and early warning mechanism, regularly conducting overseas public safety risk monitoring and assessment, conducting in-depth analysis of country-specific security risks, upgrading the country risk assessment indicator system, compiling and publishing the annual CNOOC Limited Report of Oversea Safety Risk, and strengthening risk classification and categorization management and control capabilities. During the reporting period, we continued to build the overseas project safety evaluation system, comprehensively optimized the safety review mechanism for new project decision-making, strengthened public safety inspections of key projects, improved joint prevention and protection mechanisms, and reduced operational risks of overseas projects.

The Company carried out targeted actions to strengthen emergency response capability. We organized regular drills and safety training, expanded training resources, and enforced the principle of “no assignment without training” to improve expatriate employees’ safety awareness and emergency response capability. We also prioritized their physical and mental well-being by holding quarterly health and safety seminars and conducting annual medical and mental health screenings.